Quote Originally Posted by p.sharp View Post
I thought hw's had piston liners as standard? Seems daft putting another steel sleeve inside.

Most of the twang will be from the guide imo.
Nope, sleeve not standard. Well worth doing. Its primary purpose is to stop any lube from migrating towards the compression area, but its secondary benefit is to reduce twang slightly.

I would agree that reducing twang is more down to properly fitting spring guide and top hat. If this rifle has the old metal one, you could switch that for the later, nylon one. This will reduce twang. However, custom fitting ones will make it even better.

You could buy a different spring with matching top hat and guide, but then if you have recently forked out on a new spring, you may be reluctant to spend again.

If you took the exact ID measurements of the spring, I'm sure UK Neil, Bigtoe or Welsh Willy would be happy to oblige.....Assuming here that you haven't the facilities to turn your own up.